<template>
  <div id="BigPie">
    <div ref="pie1" class="pieBox"></div>
  </div>
</template>

<script>
export default {
  props: {
    valueData: Array || Object,
    iswrap: false
  },
  components: {},
  data() {
    return {
      colorList: [
        '#f06c44',
        '#f3ac62',
        '#f18b6a',
        '#f9a371',
        '#f06c44',
        '#f3ac62',
        '#f18b6a',
        '#f9a371'
      ],
      wrap: ''
    };
  },
  computed: {},
  watch: {},
  created() {
    if (this.iswrap == true) {
      this.wrap = '\n';
    } else {
      this.wrap = '';
    }
  },
  mounted() {
    this.drawpie();
  },

  methods: {
    drawpie() {
      let that = this;
      // 基于准备好的dom，初始化echarts实例
      let myChart = that.$echarts.init(that.$refs.pie1);
      let option = {
        color: that.colorList,
        tooltip: {
          trigger: 'item',
          formatter: '{b} :{d}%',
          confine: true //将此限制打开后tooltip将不再溢出
        },
        grid: {
          top: '15%', // 组件离容器上侧的距离,百分比字符串或整型数字
          left: '35%', // 组件离容器左侧的距离,百分比字符串或整型数字
          right: '35%',
          bottom: '3%',
          containLabel: true //grid 区域是否包含坐标轴的刻度标签，
        },
        series: [
          {
            name: '访问来源',
            type: 'pie',
            radius: ['42%', '62%'],
            center: ['50%', '50%'],
            minAngle: 18,
            labelLine: {
              // 设置指示线的长度
              normal: {
                length: 12,
                length2: 8
              }
            },
            label: {
              // position: "inside",
              formatter: '{b|{b}}' + ' ： ' + that.wrap + '{d|{d}% }',
              // formatter: " {b|{b}：}{d|{d}% }",
              borderColor: '#aaa',
              avoidLabelOverlap: true,
              rich: {
                b: {
                  fontSize: 12,
                  lineHeight: 33,
                  color: '#555'
                },
                d: {
                  align: 'center',
                  color: '#555'
                }
              }
            },
            data: that.valueData
          }
        ]
      };
      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(option);
      let resizeFn = function () {
        myChart.resize();
      };
      window.addEventListener('resize', resizeFn);
      this.$once('hook:beforeDestroy', () => {
        myChart.dispose();
        myChart = null;
        window.removeEventListener('resize', resizeFn);
      });
    }
  }
};
</script>
<style lang="less" scoped>
#BigPie {
  width: 100%;
  height: 100%;
  .pieBox {
    width: 100%;
    height: 100%;
  }
}
</style>
